12066221312 has 36 divisors (see below), whose sum is σ = 24224619300. Its totient is φ = 5998215168.

The previous prime is 12066221303. The next prime is 12066221333. The reversal of 12066221312 is 21312266021.

It is a happy number.

12066221312 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 10163865856 + 1902355456 = 100816^2 + 43616^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91937 + ... + 180512.

Almost surely, 2^12066221312 is an apocalyptic number.

It is an amenable number.

12066221312 is an abundant number, since it is smaller than the sum of its proper divisors (12158397988).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12066221312 is an equidigital number, since it uses as much as digits as its factorization.

12066221312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272638 (or 272624 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

Adding to 12066221312 its reverse (21312266021), we get a palindrome (33378487333).

The spelling of 12066221312 in words is "twelve billion, sixty-six million, two hundred twenty-one thousand, three hundred twelve".